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我必须实现一个图像列表，例如 pinterest 的图像列表（具有不对称行的网格），并且我StaggeredGridLayoutManager在我的片段中以这种方式使用：

场景片段

scenarioAdapter = Adapter(mutableListOf()) {
            with(requireActivity() as MainActivity) {
                startImageActivity(it.imageLink, it.name)
            }
        }
        scenarioAdapter.clearList()
        val mLayoutManager = StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)
        mLayoutManager.gapStrategy = StaggeredGridLayoutManager.GAP_HANDLING_NONE
        scenario_list.layoutManager = mLayoutManager
        scenario_list.adapter = scenarioAdapter

        scenarioViewModel.getScenario()

由于此图像列表是分页的，因此我 onViewCreated将其称为方法：

private fun initScrollListener() {
        scenario_list.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                super.onScrolled(recyclerView, dx, dy)
                val layoutManager = recyclerView.layoutManager as StaggeredGridLayoutManager
                layoutManager.invalidateSpanAssignments()
                val lastVisibleItemPositions = intArrayOf(0,0)
                layoutManager.findLastVisibleItemPositions(lastVisibleItemPositions)
                if ((lastVisibleItemPositions[1] == scenarioAdapter.itemCount - 1) &&
                    scenarioAdapter.itemCount >= BuildConfig.PAGE_SIZE && keepScrolling && !alreadyRefreshed) {
                    alreadyRefreshed = true
                    scenarioViewModel.getScenario(scenarioAdapter.getPage())
                }
            }
        })
    }

它工作正常，它可以正确加载图像。

这是适配器

 class Adapter(
        private val items: MutableList<ScenarioModel>,
        private val click: (ScenarioModel) -> Unit
    ) :
        RecyclerView.Adapter<Adapter.ViewHolder>() {

        fun update(list: MutableList<ScenarioModel>) {
            this.items.addAll(list)
            notifyDataSetChanged()
        }

        fun clearList() = items.clear()

        fun getPage(): Int = (items.size / BuildConfig.PAGE_SIZE)

        override fun onCreateViewHolder(
            parent: ViewGroup,
            viewType: Int
        ): ViewHolder {
            val view =
                LayoutInflater.from(parent.context)
                    .inflate(R.layout.item_scenario_dynamic, parent, false)
            return ViewHolder(view)
        }

        override fun onBindViewHolder(holder: ViewHolder, position: Int) {
            holder.bindItem(items[position], click)
        }

        override fun getItemCount(): Int = items.size

        class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
            fun bindItem(item: ScenarioModel, click: (ScenarioModel) -> Unit) {
                GlideApp.with(itemView.context).load(item.imageLink).into(itemView.scenario_image)
                itemView.setOnClickListener { click(item) }
            }
        }
    }

问题是这样的：当显示片段时，我显示了 10 个项目。当我向下滚动时，它工作得很好。但是当我回去，向上滚动时，这些项目会做一个动画，就像它们被重新排序或重新加载一样，它每次都会改变。谁可以解决这个问题？

PS：问题与分页无关，我尝试只获取第一页，尺寸很大，但问题仍然存在。

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